time { \
mkdir -v build;\
cd build;\
../configure --prefix=$LFS/tools \
            --with-sysroot=$LFS \
            --target=$LFS_TGT   \
            --disable-nls       \
            --enable-gprofng=no \
            --disable-werror    \
            --enable-new-dtags  \
            --enable-default-hash-style=gnu;\
make;\
make install;\
}

# 6个cpu 1m22s
# 单个cpu(SBU)大概 8m